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Science China Materials

, Volume 62, Issue 12, pp 1888–1897 | Cite as

Advanced 3D nanohybrid foam based on graphene oxide: Facile fabrication strategy, interfacial synergetic mechanism, and excellent photocatalytic performance

  • Xiaoyuan Zhang (张晓媛)
  • Wenfeng Wei (魏文锋)
  • Shan Zhang (张山)
  • Bianying Wen (温变英)Email author
  • Zhiqiang Su (苏志强)Email author
Articles

Abstract

Herein, a unique nanohybrid foam was fabricated with titanium dioxide (TiO2)-carbon quantum dots (CQDs) nanoparticles intercalated between graphene oxide (GO) layers via a facile and low-cost solvothermal method. Compared with pure GO foam, the fabricated GO-TiO2-CQDs foam displayed high degradation rate towards methyl orange (MO), methylene blue (MB), and rhodamine B (RhB), respectively, under the Xenon lamp irradiation. The composite foam can be used for several times and remain a high degradation rate without structural damage. The photochemical property was attributed to the 3D porous structure of GO-TiO2-CQDs foam, in which ultrafine hydrogenated TiO2-CQDs nanoparticles were densely anchored on the GO sheets. This paper provides an efficient strategy to tune the charge transport and thus enhance the photocatalytic performance by combining the semi-conductive GO and quantum dots.

Keywords

graphene titanium dioxide carbon quantum dots nanohybrid foam photocatalytic degradation 

氧化石墨烯基3D泡沫的制备策略、界面协同机理和高效光催化性能研究

摘要

本文通过高效低成本的水热法将TiO2@CQDs插入还原氧化石墨烯片层间, 制备了一种独特的纳米杂化三维rGO-TiO2-CQDs泡沫. 在氙灯照射下, 所合成的三维rGO-TiO2-CQDs泡沫对甲基橙(MO)、 亚甲蓝(MB)以及罗丹明B(RhB)表现出很高的降解速率, 在多次使用后仍然保持高效且形貌不变. 这种优异的光催化性能归因于rGO-TiO2-CQDs泡沫的多孔结构, 以及密集吸附在石墨烯表面上的催化剂TiO2@CQDs. 本文中所描述的三维杂化泡沫将光催化剂TiO2与半导体石墨烯和碳量子点结合, 有望为进一步提高电荷分离效率, 进而提高光催化效果, 开辟一条新途径.

Notes

Acknowledgements

This work was supported by the National Natural Science Foundation of China (NSFC, 51573013 and 51873016) and the Open Project Program of Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, Beijing Technology and Business University (QETHSP2019006).

Conflict of interest The authors declare no conflict of interest.

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Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Xiaoyuan Zhang (张晓媛)
    • 1
  • Wenfeng Wei (魏文锋)
    • 1
  • Shan Zhang (张山)
    • 1
  • Bianying Wen (温变英)
    • 2
    Email author
  • Zhiqiang Su (苏志强)
    • 1
    Email author
  1. 1.State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Advanced Functional Polymer CompositesBeijing University of Chemical TechnologyBeijingChina
  2. 2.Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of PlasticsBeijing Technology and Business UniversityBeijingChina

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